Histamine Release Factors and Immune Reactions Quiz
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Questions and Answers

What are the two main categories of immune reactions mentioned in the text?

  • Chemical and physical
  • Immunological and non-immunological (correct)
  • Acute and chronic
  • Primary and secondary
  • Which of the following is NOT listed as a cause of non-immunological acute ordinary urticaria in the text?

  • Infection
  • Hormones
  • COVID-19 Drugs
  • Allergic food reactions (correct)
  • Which of the following is NOT a type of physical urticaria according to the text?

  • Delayed pressure urticaria
  • Aquagenic urticaria (correct)
  • Cold urticaria
  • Dermographism
  • What are the common mediators of Urticaria mentioned in the text?

    <p>Histamine and immune complexes</p> Signup and view all the answers

    What is the classification of Urticaria that includes cholinergic and solar urticaria?

    <p><strong>Physical urticaria</strong></p> Signup and view all the answers

    What type of reaction is caused by bee or wasp stings according to the text?

    <p><strong>Immunological (IgE mediated) reaction</strong></p> Signup and view all the answers

    What characterizes the condition of urticaria?

    <p>Development of wheals (hives) or angioedema</p> Signup and view all the answers

    How is urticaria classified based on duration?

    <p>Acute (less than six weeks) and Chronic (more than six weeks)</p> Signup and view all the answers

    What is the pathogenesis of wheal formation in urticaria?

    <p>Attachment of IgE antibody and an antigen to mast cells, leading to histamine release</p> Signup and view all the answers

    Which one of the following is NOT a mediator involved in urticaria?

    <p>Insulin</p> Signup and view all the answers

    What factors are responsible for histamine release in urticaria?

    <p>IgE antibody and an antigen binding to mast cells</p> Signup and view all the answers

    What type of reaction does urticaria represent?

    <p>Vascular reactions of the skin</p> Signup and view all the answers

    What type of angioedema is considered the most common?

    <p>Idiopathic</p> Signup and view all the answers

    Which part of the body is commonly involved in angioedema?

    <p>Lips</p> Signup and view all the answers

    What characterizes the resolution of angioedema compared to wheals in urticaria?

    <p>Angioedema resolves slower</p> Signup and view all the answers

    What is the main difference in presentation between wheals and angioedema?

    <p>Wheals are more burning than itchy</p> Signup and view all the answers

    What type of angioedema may be hereditary?

    <p>Hereditary (HAE) angioedema</p> Signup and view all the answers

    Which of the following is NOT a characteristic of systemic anaphylaxis?

    <p>Localized itching</p> Signup and view all the answers

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